09504bdd1f merge bitcoin#28895: do not make automatic outbound connections to addnode peers (Kittywhiskers Van Gogh)
6cf206ca0e merge bitcoin#28155: improves addnode / m_added_nodes logic (Kittywhiskers Van Gogh)
11d654af19 merge bitcoin#28189: diversify network outbounds release note (Kittywhiskers Van Gogh)
5dc52b3b6f merge bitcoin#27213: Diversify automatic outbound connections with respect to networks (Kittywhiskers Van Gogh)
291305b4d2 merge bitcoin#26497: Make ConsumeNetAddr always produce valid onion addresses (Kittywhiskers Van Gogh)
6a37934af4 partial bitcoin#26396: Avoid SetTxRelay for feeler connections (Kittywhiskers Van Gogh)
221a78ea84 merge bitcoin#25156: Introduce PeerManagerImpl::RejectIncomingTxs (Kittywhiskers Van Gogh)
cc694c2e5b merge bitcoin#22778: Reduce resource usage for inbound block-relay-only connections (Kittywhiskers Van Gogh)
6e6de54e5e net: use `Peer::m_can_relay_tx` when we mean `m_tx_relay != nullptr` (Kittywhiskers Van Gogh)
77526d2129 net: rename `Peer::m_block_relay_only` to `Peer::m_can_tx_relay` (Kittywhiskers Van Gogh)
Pull request description:
## Additional Information
* Dependency for https://github.com/dashpay/dash/pull/6333
* When backporting [bitcoin#22778](https://github.com/bitcoin/bitcoin/pull/22778), the `m_tx_inventory_known_filter.insert()` call in `queueAndMaybePushInv()` had to be moved out as `EXCLUSIVE_LOCKS_REQUIRED` does not seem to work with lambda parameters list (though it does work with capture list, [source](4b5e39290c/src/net_processing.cpp (L5781))), see error below
<details>
<summary>Compiler error:</summary>
```
net_processing.cpp:5895:21: note: found near match 'tx_relay->m_tx_inventory_mutex'
net_processing.cpp:5955:21: error: calling function 'operator()' requires holding mutex 'queueAndMaybePushInv.m_tx_inventory_mutex' exclusively [-Werror,-Wthread-safety-precise]
queueAndMaybePushInv(tx_relay, CInv(nInvType, hash));
^
net_processing.cpp:5955:21: note: found near match 'tx_relay->m_tx_inventory_mutex'
net_processing.cpp:5977:17: error: calling function 'operator()' requires holding mutex 'queueAndMaybePushInv.m_tx_inventory_mutex' exclusively [-Werror,-Wthread-safety-precise]
queueAndMaybePushInv(inv_relay, inv);
^
```
</details>
* Attempting to remove the `EXCLUSIVE_LOCKS_REQUIRED` or the `AssertLockHeld` are not options due to stricter thread sanitization checks being applied since [dash#6319](https://github.com/dashpay/dash/pull/6319) (and in general, removing annotations being inadvisable regardless)
* We cannot simply lock `peer->GetInvRelay()->m_tx_inventory_mutex` as a) the caller already has a copy of the relay pointer (which means that `m_tx_relay_mutex` was already held) that b) they used to lock `m_tx_inventory_mutex` (which we were already asserting) so c) we cannot simply re-lock `m_tx_inventory_mutex` as it's already already held, just through a less circuitous path.
* The reason locking is mentioned instead of asserting is that the compiler treats `peer->GetInvRelay()->m_tx_inventory_mutex` and `tx_relay->m_tx_inventory_mutex` as separate locks (despite being different ways of accessing the same thing) and would complain similarly to the error above if attempting to assert the former while holding the latter.
* As `m_tx_relay` is always initialized for Dash, to mimic the behaviour _expected_ upstream, in [bitcoin#22778](https://github.com/bitcoin/bitcoin/pull/22778), `SetTxRelay()` will _allow_ `GetTxRelay()` to return `m_can_tx_relay` (while Dash code that demands unconditional access can use `GetInvRelay()` instead) with the lack of `SetTxRelay()` resulting in `GetTxRelay()` feigning the absence of `m_can_tx_relay`.
This allows us to retain the same style of checks used upstream instead of using proxies like `!CNode::IsBlockOnlyConn()` to determined if we _should_ use `m_tx_relay`.
* Speaking of proxies, being a block-only connection is now no longer the only reason not to relay transactions
In preparation for [bitcoin#26396](https://github.com/bitcoin/bitcoin/pull/26396), proxy usage of `!CNode::IsBlockOnlyConn()` and `!Peer::m_block_relay_only` was replaced with the more explicit `Peer::m_can_tx_relay` before being used to gate the result of `GetTxRelay()`, to help it mimic upstream semantics.
## Breaking Changes
None expected
## Checklist
- [x] I have performed a self-review of my own code
- [x] I have commented my code, particularly in hard-to-understand areas **(note: N/A)**
- [x] I have added or updated relevant unit/integration/functional/e2e tests
- [x] I have made corresponding changes to the documentation
- [x] I have assigned this pull request to a milestone _(for repository code-owners and collaborators only)_
ACKs for top commit:
UdjinM6:
utACK 09504bdd1f
Tree-SHA512: f4f36f12f749b697dd4ad5521ed15f862c93ed4492a047759554aa80a3ce00dbd1bdc0242f7a4468f41f25925d5b79c8ab774d8489317437b1983f0a1277eecb
This is the official reference wallet for Dash digital currency and comprises the backbone of the Dash peer-to-peer network. You can download Dash Core or build it yourself using the guides below.
Running
The following are some helpful notes on how to run Dash Core on your native platform.
Unix
Unpack the files into a directory and run:
bin/dash-qt (GUI) or
bin/dashd (headless)
Windows
Unpack the files into a directory, and then run dash-qt.exe.
macOS
Drag Dash Core to your applications folder, and then run Dash Core.
The following are developer notes on how to build Dash Core on your native platform. They are not complete guides, but include notes on the necessary libraries, compile flags, etc.